<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    let arr = [66, 34, 5, 7, 10, 90, 23, 1, 0, 14]
    let max = arr[0]
    let min = arr[0]
    let sum = 0
    console.log(arr)
    for (let a = 0; a < arr.length; a++) {
      sum += arr[a]
    }
    for (let i = 1; i < arr.length; i++) {
      if (max < arr[i]) {
        max = arr[i]
      }
      if (min > arr[i]) {
        min = arr[i]
      }
    }
    console.log(`数组总和为:${sum}`)
    console.log(`数组总和的平均值为:${sum / arr.length}`)
    console.log(`最大值是:${max}`)
    console.log(`最小值是:${min}`)

  </script>
</body>

</html>